Today's Message Index:
----------------------
1. 10:24 AM - oil seep (dlm)
2. 11:04 AM - Re: oil seep (Lenny Iszak)
3. 11:39 AM - Re: oil seep (Don McDonald)
Message 1
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Recently new oil and filter installed on IO540 D4A5. We added about 9.5
quarts on the stick.
During the annual we opened and serviced (SB) the magnetos. We checked the
strainer and removed/replaced the quick drain. We opened and closed five
items.- These all check negative for seeps. Yet after seven days uncowled
in the hangar, oil continues to seep slowly externally down the fuel pump
drain line. I have also checked oil return lines. We are beginning to
believe we may have overfilled the oil system. Any feedback from others?
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Message 2
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Could be a broken oil diaphragm in the fuel pump.
Check out this pump teardown from Dan's site:
https://www.danhorton.net/VAF/High%20Fuel%20Pressure/Fuel%20Pump%20Dismantl
ed.docx
The oil sump holds 12 qts in the D4A5, per Lycoming specs. The excess oil
would just come out the breather.
Lenny
On Sun, Jun 25, 2023 at 1:36=AFPM dlm <dlm34077@gmail.com> wrote:
> Recently new oil and filter installed on IO540 D4A5. We added about 9.5
> quarts on the stick.
> During the annual we opened and serviced (SB) the magnetos. We checked th
e
> strainer and removed/replaced the quick drain. We opened and closed five
> items.- These all check negative for seeps. Yet after seven days uncowled
> in the hangar, oil continues to seep slowly externally down the fuel pump
> drain line. I have also checked oil return lines. We are beginning to
> believe we may have overfilled the oil system. Any feedback from others?
>
>
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Message 3
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In 13 year and 1,300 hours I've never put more than 7 quarts in mine.Don
=C2-
On Sunday, June 25, 2023 at 01:17:36 PM CDT, Lenny Iszak <lenard@rapidd
ecision.com> wrote:
Could be a broken oil diaphragm in the fuel pump.
Check out this pump teardown from Dan's site:https://www.danhorton.net/VAF/
High%20Fuel%20Pressure/Fuel%20Pump%20Dismantled.docx
The oil sump=C2-holds 12 qts in the D4A5, per Lycoming=C2-specs. The ex
cess oil would just come out the=C2-breather.
Lenny
On Sun, Jun 25, 2023 at 1:36=AFPM dlm <dlm34077@gmail.com> wrote:
Recently=C2-new=C2-oil and filter installed on IO540 D4A5. We added abo
ut 9.5 quarts on the stick.During the annual we opened and serviced (SB) th
e magnetos. We checked the strainer and removed/replaced the quick drain. W
e opened and closed five items.- These all check negative=C2-for seeps. Y
et after seven days uncowled in the hangar, oil continues to seep slowly ex
ternally down the fuel pump drain line. I have also checked oil return line
s. We are beginning to believe we may have overfilled the oil system. Any f
eedback from others?
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